Distribution of the Nosema ceranae (Microspora, Nosematidae) in the Apiaries in Ukraine

Abstract

Investigated the distribution of microsporidia Nosema ceranae — the pathogen of so-called «Asian» Nosema disease in the apiaries of Ukraine. Investigated 784 samples of bee’s podmore in a large extent affected by Nosemosis, that have been sent by beekeepers for research from 11 regions of Ukraine (Kyiv, Poltava, Vinnytsia, Chernihiv, Zhytomyr, Sumy, Zaporizhia, Donetsk, Volyn, Lviv, Khmelnytsky) in 2014–2016. Microsporidia Nosema ceranae was found in 74.5 % of the analyzed bee samples, i. e. on prevalence it dominated the microsporidia Nosema apis. Clinical signs and course of Nosema disease in bee families, where been found microsporidia Nosema ceranae, were classic, namely the weak development of families in the spring, in some families — the presence of traces of diarrhea.

Twenty-five-year study of Nosema spp. in honey bees (Apis mellifera) in Serbia

“…apis . In most of the examined beehives from the honey bee societies of infected European countries were also primarily N. ceranae (Higes et al, 2006, Higes et al, 2006, Stevanovic et al, 2011, Stevanovic et al, 2013, Odnosum, 2017, Papini et al, 2017).…”

“…This can also be explained by other stress factors (pesticide poisoning, parasites, poor nutrition, flaws in bee technology, heavy metal contamination, etc.) (Alaux et al, 2010, Ansari et al, 2017, Vidau et al, 2011, Cox-Foxter et al, 2007; Genersch et al, 2010, Gisder et al, 2010, Ruschioni et al, 2013, Odnosum, 2017, OIE, 2013, Paris et al, 2018, Papini et al, 2017, Sinpoo et al, 2018).…”

Features of microsporidia Nosema apis and Nosema ceranae (Nosema species) development of winter bee (Apis mellifera L.) generation

“…Differentiation of these two species of parasites became possible with the development of molecular genetic analysis for diagnostics [1][2][3][4]. N. ceranae in many countries, including Ukraine [5,6], predominates in distribution over N. apis already in most apiaries, but more often they are found together [7,8], for example in Canada and central USA [9], in the Balkan countries [10], in Russia [11][12][13], in Japan [14], across Scotland [15], in temperate and subtropical ecoregions of Argentina [16], in Turkey [17]. Nosemosis exacerbation is one of the main causes of periodic mass death of bees in the world [18][19][20].…”